2007 YAMAHA WR 250F engine

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Page 80 of 912

YAMAHA WR 250F 2007  Owners Manual 1 - 55
GEN
INFO
STARTING A WARM ENGINE
Do not operate the cold starter knob
and throttle. Pull the hot starter lever
1 and start the engine by pushing
the start switch or by kicking the kick-
starter

Page 82 of 912

YAMAHA WR 250F 2007  Owners Manual 1 - 57
GEN
INFO
BREAK-IN PROCEDURES
1. Before starting the engine, fill the
fuel tank with the fuel.
2. Perform the pre-operation
checks on the machine.
3. Start and warm up the engine.
Check the idle

Page 84 of 912

YAMAHA WR 250F 2007  Owners Manual 1 - 59
GEN
INFO
TORQUE-CHECK POINTS
Frame construction Frame to rear frame
Combined seat and fuel tank Fuel tank to frame
Exhaust system Silencer to rear frame
Engine mounting Frame to engine
Engine b

Page 90 of 912

YAMAHA WR 250F 2007  Owners Manual 1 - 65
GEN
INFO
EC1B0000
CLEANING AND 
STORAGE
EC1B1000CLEANING
Frequent cleaning of your machine
will enhance its appearance, main-
tain good overall performance, and
extend the life of many componen

Page 92 of 912

YAMAHA WR 250F 2007  Owners Manual 1 - 67
GEN
INFO
EC1B2001STORAGE
If your machine is to be stored for 60
days or more, some preventive mea-
sures must be taken to avoid deterio-
ration. After cleaning the machine
thoroughly, prepare i

Page 94 of 912

YAMAHA WR 250F 2007  Owners Manual GENERAL SPECIFICATIONS
2 - 1
SPEC
EC200000
SPECIFICATIONS
EC211000
GENERAL SPECIFICATIONS
Model name: WR250FW (USA, CDN, AUS, NZ)
WR250F (EUROPE, ZA)
Model code number: 5UME (USA)
5UMF (EUROPE)
5UMG (

Page 95 of 912

YAMAHA WR 250F 2007  Owners Manual GENERAL SPECIFICATIONS
2 - 2
SPEC
Oil capacity:
Engine oil
Periodic oil change 1.1 L (0.97 Imp qt, 1.16 US qt)
With oil filter replacement 1.2 L (1.06 Imp qt, 1.27 US qt)
Total amount 1.4 L (1.23 Imp

Page 97 of 912

YAMAHA WR 250F 2007  Owners Manual MAINTENANCE SPECIFICATIONS
2 - 4
SPEC
MAINTENANCE SPECIFICATIONS
ENGINE
Item Standard Limit
Cylinder head:
Warp limit ---- 0.05 mm 
(0.002 in)
Cylinder:
Bore size 77.00 ~ 77.01 mm 
(3.0315 ~ 3.0319 in
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